<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-show</title>
</head>
<body>
    <div id="app">
        <input type="button" value="切换显示状态" @click="changIsShow">
        <input type="button" value="加年龄" @click="addAge">
        <img src="images/1.jpg" v-show="isShow">
        <img src="images/1.jpg" v-show="age>18">
    </div>
<!-- 开发环境版本，包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
    var app = new Vue({
        el:"#app",
        data:{
            isShow:true,
            age:17
        },
        methods:{
            changIsShow:function(){
                this.isShow=!this.isShow
            },
            addAge:function(){
                this.age++
            }
        }
    })
</script>
</body>
</html>